Petee mueeay



(No Model.)

P. MURRAY, J1.

FAN.

Patented July 6, 1886.

K Vl.

N. PETERS. Pholv- NITED STATES PATENT OFFICE.

PETER MURRAY, JR., or NEWARK, N. J., ASSIGNCR, RY DIRECT AND MESNEASSIGNMENTS, To TI-IE RACKUS MANUFACTURING COMPANY.

' FAN. r

SPECIFICATION forming part of Letters Patent No. 344,980, dated July G,1886.

Application filed January 13, 1886. Serial No. 188,439. (No model.)

To all whom it may concern:

Be it known that I, PETER MURRAY, Jr., of Newark, in the county of Essexand State of New Jersey, have invented certain new and usc'- fulImprovements in Automatic Fans, ofwhich the following is aspecification.

This invention relates to au improved automatic fan of that class whichis suspended from the ceilings of offices and other rooms, so

lo as to agitate the ai r in warm weather and thereby keep the roomcool.

The invention consists of a hollow tubular fan-shaft having a fan at thelower end and a horizontal frictiondsk at the upper end, au

I5 interior slide-rod passing through the tubular fan-shaft; acontinuouslyrotating frictiondisk and a fulcrumed elbow-lever, by whicha grooved collar of the driving-disk is connected with theinteriorslide-rod, so that the driviug- :zo disk may be shifted on afixed supportingshaft toward or away from the center of the horizontalfriction-disk, whereby the speed of the fan-shaft is regulated.A Thetubular fanshaft is supported by a hanger-frame having a sleeve-shapedtubular extension, the lower end of which is connected to thehanger-frame by bracci-ods attached to lugs of the hangerframe at thelower end ofthe sleeve. y

In the accompanying drawings, Figure l 3o represents a vertical centralsection of my improved autoniatic fan, and Fig. 2 is adetail side Viewof the setting device at the lower end of the fan-shaft.

Similar letters of reference indicate corresponding parts.

Referring to the drawings, A represents a hollow tubular shaft, and B afan, the hub of which is rigidly attached to the lower end of the shaft.To the upper end of the tubular y.4o shaft is applied a horizontalfrictiondisk, a,

having a central depression, c. Through the tubular fan-shaft A extendsa slide-rod, C, that is guided by a central socket, d, of a crab77 orframe, D, by which the supporting 4 5 hanger-frame E ofthe fan-shaft isattached to the ceiling. A friction-disk, I), turns loosely on a shorthorizontal shaft, b', that is rigidly attached to asleeve, c, of thehanger-frame E, and extended inwardly toward the slide-rod 5c C. At oneside of the friction-disk b is arranged a pulley,lb2, to whichcontinuous rotary motion is imparted by a belt. The friction, disk b hasat the other side a grooved collar- L3, which is engaged by ananti-friction roller at the end of one arm of an elbow-lever, F, that isfulcrumed to a bracket-arm, c', of the hangcnframe E, as shown inFig. 1. The other arm of the elbow-lever F is forked and engages apiu,f, of the sliderod C. Thelower end ofthe slide-rod C projects belowthelower 6o end of the tubular fan-shaft A, and rests on a screw-socket,B, having a button-shaped end, s-.rid screw socket turning on auexterior screw-thread of the fan-shaft and being adapted to be adjustedhigher or lower thereon, so e5 as to raise or lower the slide-rod C.

The shifting of the sliderod C oscillates the elbow-lever F, and shiftsthereby the friction disk b on the fixed shaft b', so as to move thesame on the frictioudisk a toward the center or toward the circumferenceof the same, ac'- cording as the slide-rod C is raised or lowered.

By thus changing the position of the driving friction-disk b ou thehorizontal disk a the speed of the fan-shaft A is correspondinglychanged, the same being rotated at greater speed when the drivingfriction-disk b forms contact with the disk a near thc centraldepression, a', of the same,while the fau-shaft A is rotated atslowerspced when the driving 8o friction-disk b is at or near thecircumference of the friction-disk a. The fau is entirely stopped whenthe friction-disk b is moved inwardly, so as to be vertically above thecentral depression, a/, of the disk a, as thereby the contact with thefriction-disk a is entirely interrupted.

When the screw-socket at the lower end of the slide-rod C has beenadjusted, it is retained in position by a loosely-sliding sleeve, g,that 9o is guided by a slot, g', on a fixed pin, g2, of the fan-shaft A.The sleeve g is provided with a beveled tooth, g3, that engages one ofthe notches g of the screw-socket, so as to prevent the latter' fromunsorewing and changing its 95 position on the fanshaft. v

By taking hold of the screw-socket while the fan-shaft is in motion thesocket is screwed upon the fan-shaft, and thereby the slide-rod Oraised, so as to shift the driving-disk b in- 10o wardly and increasethe speed of the fan. By moving the frictiondisk b over the depressedportion a the fan .isyentirely stopped. By

brace-rods, E2, corresponding in length to thc turningjthescrewfsocketquicklyin-a direclengthof theeXtension'E.

tion opposite to the motion of the fan-shaft, i

Having thus described my invention, I cla m the screw-socket is lowered,together with the I as new and desire to secu re by Letters Patent--slide-rod, and the friction-disk b moved outwardly on the horizontaldisk a, so as to decrease the speed of the fanfshaft.

The tubular fanshaft A is supported in bearings of the hanger-frame E,which has a downwardly-extending tubular extension, E', at its lowerend, which extension is of such a length as to furnish the drop ordistance at which the i'an is to be suspended below the ceiling. Theextension E is provided at the lower end with a flanged collar` c2, thatis oonnected by brace-rods E with lugs e3 of the hanger-frame E, wherebythe sleeve is held rigidly in position, so as form a stcadybearing forthe fan-shaft.

The fan may be arranged at any desired drop or distance from the4ceiling by using an extension, E', of greater orsmallerlength, and

The combination of a rotary tubular shaft,

a fan attached thereto, a friction-disk also at;

tached to the fan-shaft and having a central depression, an interiorslide rod passing through the fan-shaft, a conti nuonsl y-rotatingfriction-disk turning loosely on a fixed supporting-shaft, and afulcrurned elbow-lever connecting the slide-rod with a collar of therotary friction-disk, so'as to shift the same by the sliderod accordingto the motion to be

